Doctors, Gators, Splices, and Cerberus – We have what you need to get your prototype hooked up and tested out!
The USB Charger Doctor is a handy tool that measures the working voltage and current output for any USB port and project. Plug the Doctor between a USB port and your USB device, and it will check the current draw with a 0.05 ohm resistor in line with the power pin. Data lines pass through as normal. You can use this device from 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It flips between voltage and current readouts roughly every 3 seconds.
You are in the middle of working on your latest robot, when you need to program a new board you just got in. You dig through your bin of USB cables only to find that you have hundreds that have the wrong end, and exactly zero that have the end you’re looking for. As luck would have it, you remember that you ordered the Sparkfun Cerberus USB Cable! With this cable, you will always have the right connection.
The Cerberus USB Cable has the standard A-type connector, which you can plug into your computer or USB power supply; At the other end are three common USB connectors: B, mini-B and micro-B. Want to transfer data and power three devices at the same time? This cable comes standard with a USB hub built in, so you’ll never have to worry about deciding between charging your phone and moving your extensive collection of sci-fi movies to an external hard drive.
Get connected quickly with a Cold Splice! These little wonders bite into any 22-26 AWG solid core wire with a quick squeeze from some parallel-jaw or slip joint pliers, making a solid butt splice connection. Though not waterproof, the splices contain silicone jelly to keep the cold splice from oxidizing. They come in packs of 10 splices, and can join 2 or 3 wires.
As always, there’s more to come soon. Prototype well, and check back often, we have exciting things happening this year!